The 2018 Mazda CX-5 has a fuel tank capacity of 14.8 to 15.3 gallons (56–58 liters), depending on the trim. The most common size is 15.3 gallons, used on 3 trims.
A full tank is good for roughly 459–459 highway miles or 367–370 miles around town, going by the EPA ratings.
020 gal40 gal
15.3 gal · Smaller than 75% of 2018 models we list.
Grand Touring 4dr SUV AWD2.5L 4cyl 6A · AWDMPG 24 / 30Range 367 / 459 mi
2.5L 4cyl 6A
AWD
15.3 gal58 L
24 / 30
367 / 459 mi
Sport 4dr SUV AWD2.5L 4cyl 6A · AWDMPG 24 / 30Range 367 / 459 mi
2.5L 4cyl 6A
AWD
15.3 gal58 L
24 / 30
367 / 459 mi
Touring 4dr SUV AWD2.5L 4cyl 6A · AWDMPG 24 / 30Range 367 / 459 mi
2.5L 4cyl 6A
AWD
15.3 gal58 L
24 / 30
367 / 459 mi
No trim matches all of these filters.
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 2018 Mazda CX-5 goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 26 MPG, a full 15.3-gallon tank covers about 398 miles.
Gauge
Gallons
Highway miles
City miles
Full
15.3
459
367
3/4
11.5
344
275
1/2
7.7
230
184
1/4
3.8
115
92
1/8
1.9
57
46
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 577 gallons, roughly 38 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
At 15.3 gallons, the CX-5's largest tank ranks sixth of the seven 2018 SUVs compared here. The Volkswagen Tiguan Limited carries the most (16.9 gal) and the Nissan Rogue the least (14.5 gal).
Other 2018 SUVs of a similar size, one model per brand.
2018 Mazda CX-5 fuel system recalls
NHTSA lists 1 fuel-system recall for the 2018 Mazda CX-5, out of 3 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Delivery · Fuel pumpNov 12, 2021 · NHTSA 21V875000 · Mazda North American Operations · 121,038 vehicles
Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.
Risk and remedy
Risk: Fuel pump failure may cause an engine stall, increasing the risk of a crash.
Remedy: Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 5321K.
What is the fuel tank capacity of the 2018 Mazda CX-5?
The 2018 Mazda CX-5 holds between 14.8 and 15.3 gallons, depending on the trim. 15.3 gallons is the usual size; the smaller 14.8-gallon tank is on the Grand Touring 4dr SUV.
How many gallons and liters does the 2018 Mazda CX-5 gas tank hold?
The 2018 Mazda CX-5 tank holds 56–58 liters, or 14.8–15.3 gallons in US gallons.
Which 2018 Mazda CX-5 has the biggest gas tank?
The 15.3-gallon tank is on the Grand Touring 4dr SUV AWD, Sport 4dr SUV AWD, Touring 4dr SUV AWD. The smallest tank, 14.8 gallons, is on the Grand Touring 4dr SUV.
Does AWD change the 2018 Mazda CX-5 gas tank?
Yes. FWD: 14.8 gal; AWD: 15.3 gal.
How far can a 2018 Mazda CX-5 go on a full tank?
About 459–459 miles on the highway and 367–370 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2018 Mazda CX-5 go on a quarter tank?
About 115 highway miles or 92 in town from the 15.3-gallon tank, which has roughly 3.8 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2018 Mazda CX-5 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2018 Mazda CX-5?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 15.3-gallon tank from empty costs $65.33. It ranges from $56.61 in the Gulf Coast to $90.12 in California.
How much does a full tank of gas weigh in a 2018 Mazda CX-5?
About 95 pounds for the 15.3-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2018 Mazda CX-5 have a bigger gas tank than the Jeep Cherokee?
No. The 2018 Jeep Cherokee holds up to 15.8 gallons; the 2018 Mazda CX-5 holds up to 15.3.
Has the 2018 Mazda CX-5 had a fuel pump or fuel system recall?
Yes. NHTSA lists 1 fuel-system recall for the 2018 Mazda CX-5: 21V875000 (delivery · fuel pump). Check your VIN at nhtsa.gov/recalls to see if your car is affected.
Sources
Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).